LHC limits on gluinos and squarks in the minimal Dirac gaugino model

Understand

Dirac gauginos are a well-motivated extension of the MSSM, leading to interesting phenomenological consequences.

• At the LHC, gluino-pair production is enhanced while squark production is suppressed as compared to the MSSM, and the decay signatures are altered by a more complex chargino and neutralino spectrum.
• We investigate how this impacts current gluino and squark mass limits from Run~2 of the LHC.
• Concretely, we compare different assumptions about the electroweak-ino spectrum through four benchmark models paying particular attention to the effect of the trilinear $\lambda_S$ coupling, which induces a mass splitting between the mostly bino/U(1) adjoint states.